What are the payment terms?

Payment terms include LC, T/T, Western Union, Small-amount payment, PayPal, and D/P.

What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 2000 units.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

High-Efficiency 20A Solar Charge Controller for Optimal Energy Savings

Name: High-Efficiency 20A Solar Charge Controller for Optimal Energy Savings
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 2278587295

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$13.50-36.50

500 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

SKA

Condition

New

Certification

ISO, CE

Application

Solar System Controller

Rated Voltage

12V/24V

Transport Package

Box

Specification

18.5*11.7*5cm

Trademark

Junengjiu

Origin

Zhongshan, China

Production Capacity

50000

Key features

High-Efficiency MPPT Technology: Maximizes solar panel output power by dynamically adjusting operating points for higher efficiency.

Dual Voltage Compatibility: Supports both 12V and 24V systems for versatile application in various solar setups.

Comprehensive Battery Protection: Prevents overcharging, over-discharging, and overload to extend battery life and ensure safety.

Multi-Battery Type Support: Compatible with Lead-acid, Lithium, and Gel batteries for flexible system configuration.

Certified Quality Assurance: Product holds ISO and CE certifications, ensuring compliance with international standards.

Customization Services: ODM service available with customization options from designs and samples.

1-Year Warranty Coverage: Provides a 1-year warranty for new condition products to ensure customer confidence.

100% Finished Product Inspection: Every unit undergoes visual and functional inspection before shipment to guarantee quality.

Company profile

Product CertificationQuality AssuranceExhibition ExperienceFast Delivery

Zhongshan Juneng Jiu Technology Co.,Ltd

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 1 Year CertifiedNearest Port: Zhongshan PortAverage Response Time: ≤4.15h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined company and a trade company located in Zhongshan, with associated companies in manufacturing. It reports CE and RoHS certifications, customization from designs and samples, ODM services, and new product development during the past year. Production resources include three production lines and several listed machines, but the supplier does not continuously reconcile production quantities for each batch. Service procedures exist for supplier assessment, corrective actions, and complaint handling, yet no written records were provided. Overseas service infrastructure is limited: no overseas warehouse, showroom, agents, or branches, and no overseas service countries were reported. Financial records are referenced for 2022–2024, but no financial performance details are provided. No available SDK, no factory environmental impact assessment report, and no OEM service for popular brands were reported.

CertificationsThe supplier reports CE and RoHS certifications. These are explicit product or compliance certifications and provide positive evidence for this field.

After-Sales capabilityThe supplier has procedures for complaint handling, corrective and preventive actions, and service-capability assessment, but no written records are available. It has no overseas warehouse, showroom, agents, or branches, and reports service availability in zero overseas countries, limiting demonstrated after-sales coverage.

R&D capabilityThe supplier reports new products during the past year and provides ODM services, demonstrating some product-development capability. However, it explicitly reports no available SDK, so the evidence does not support a fully strong innovation capability across the requested scope.

Production capacityThe supplier lists multiple production-related facilities or equipment and reports three production lines. However, it does not continuously reconcile quantities for each batch or bulk production, which is an explicit production-control deficiency.

Customization capabilityThe supplier explicitly supports customization from designs and samples and provides ODM services. These capabilities directly demonstrate design-based and sample-based customization.

Product Q&A

Q:What is the difference between PWM and MPPT controllers?

PWM controllers reduce voltage directly with lower efficiency, suitable for small systems. MPPT controllers maximize output power by adjusting operating points, offering higher efficiency for high-power or low-temperature systems.

Q:What types of batteries are supported?

Most solar controllers support multiple battery types, including Lead-acid (sealed/open), Lithium (lithium iron phosphate, ternary lithium), and Gel batteries.

Q:Does the controller have overload protection?

Yes, most solar controllers have overload protection. When load current exceeds the rated value, the controller automatically cuts off output to protect the system.

Q:How does the controller work at night?

At night, the solar controller stops charging and manages the battery's discharge to the load according to settings, preventing the battery from being over-discharged.

Q:What is the warranty period for this product?

We provide a 1-year warranty for this new condition solar charge controller.